Cushion cap for key operated machines



July 24, 1934. w MUN ON 1,967,720

CUSHION CAP FOR KEY OPERATED MACHINES Filed NOV. 27, 1929 lNVENTOR 76 ATTORNEYS Patented July 24, 1934 in-I rE STATES PATNT .GFElC-E "CUSHION CAP FOR KEY OPERATED MACHINES Garry W. Munson, East range,;N. J.

Application November 27,1929;Serial'N0;"410,T18,'

3 Claims. (01.197-103) This invention relates to. improvements in 7,8 will yield outwardlyand allow the projeccushioncaps for key operated machinesand has tions 19, 12 to pass over the rim, after which for its object-toprovide a device which'may be the portionsv 7, 8 will return to their normal removably secured-t0 keys of calculating or other position and the projections 10, 12 rest in posi- 5 -machines without obstructing the general vistionunder the rim 13,- as clearly shown in Fig. 4. 6-0

ibility of the lines of keys. I The cup-shaped upper portion-2 of the cap vAnother object is to-provide a-device which arranged to receive a. finger cushion 15 of will minimize :the obstruction between the lines rubber or other-similar material, which is-seof keys -in one direction and permit of a free cured therein in-anywellknown or-approved passage between the rows of keys for the movemanner. 5

ment of the division bars or other means (not By providing the body with the cut away shown) of calculating machines or the like. portions 5,. 6, it will be seen that the key 14 Another object is to provide a device which Will be readily visible to the operator in any will be simple and rigid in construction, economposition. In other words, the cut away porical to manufacture and readily applied to the tions 5, 6 provide a decided line with respect 70 key of the machine. to the adjacent keys, so that the operator can Another object is to provide certain improveadi y See Whet e t e y is in its normal ments in the form, construction and arrangeposition or whether it has been depressed.

ment of the parts whereby the above named and e e adv a Obtained y e Cu ay other objects may effectivel be attained. p r ion 5. 6 is h f that the pa i 75 5 cap.

A practical embodiment of my invention is one direction between adjacent keys are kept represented in the accompanying drawing, in entirely free from obstruction, since the porwhich tion of the keys of a machine of this char- Fig. 1 represents a plan View of my improved acter which receive the cushion caps are relatively thin, closely associated and designed with ,30 Fig. 2 represents a side elevation of the same as little space as possible therebetween. applied to a key of a calculating machine. It is also to be pointed out that, by reason Fig. 3 represents a front elevation of the same, of the cut away portions 5, 6, the body does and not extend below the rim 13 of the key 14,

Fig. 4 represents a vertical central section thus permitting the use of the division bars taken in the plane of the line IV-IV of Fig. 1, or other means (not shown) interposed belooking in the direction of the arrows. tween the keys which are commonly found in The cap is constructed of thin sheet metal machines or" this character.

and comprises a tubular body denoted by 1, a It is obvious that various changes may be :35 shallow cup-shaped upper portion denoted by 2 resorted to in the form, construction, and arhaving an annular peripheral edge denoted by rangement of the several parts without depart- 3 extending upwardly from the body and a boting from the spirit and scope of my invention; tom denoted by 4. The body has cut away porand hence, I do not intend to be limited to tions 5, 6 disposed on opposite sides, thereby the details herein shown and described except 40 forming diametrically opposed depending front as they may be included in the claims.

and rear portions 7, 8 respectively. The front What I claim is:

portion 7 is provided with an indention 9 near 1, A cushion cap for the keys of calculating its lower edge, which indention extends inwardly or similar machines in which the keys are from the interior Wa to o a rounded p arranged in vertical alinement and stepped re- 45 J' Ct O The real POTtiOIl 8 s a Si ar lation, each key being formed with a relatively indention 11 which forms a rounded pr0je0t 0n narrow rim and a reduced shank portion de- 12 011 the int W These P ojections 10 pending therefrom, said cap comprising a thin and 12 are a d 0 engage the lower edge sheet metal tubular member arranged to cover of the relatively narrow rim 13 of the key 14 the rim of the key and terminate at the lower 50 to prevent unintentional displacement of the edge thereof and a relatively wide portion excap. By t s Construction, it will readily be tending perpendicularly below the rim to obseen that when e C p is to be pp the scure the front of the shank of the key, the verkey, the projections will rest upon the p of tical edges of said extended portion being tapered the narrow Tim 3 0f the y, and by depressing to substantially conform to the contour of the the cap downwardly t e front and rear po s shank, the lower end of the extended portion being slightly yieldable and arranged to be sprung over the rim when being positioned thereon, an indentation formed in the tapered bottom of the extended portion and provided with a rounded interior wall disposed to frictionally engage the lower edge of the rim, and a resilient cushion fixed in and projecting from the top of the member. V

2. A- cushion cap for the keys of calculating or similar machines in which the keys are arranged in vertical alinement and stepped relation, each key being formed with a relatively narrow rim and a reduced shank portion depending therefrom, said cap comprising a thin sheet metal tubular member having portions arranged to cover the rim of the key and terminate at the lower edge thereof and relatively wide front and rear portions extending perpendicularly below the rim to obscure parts of the shank and leave the sides of the shank exposed, the vertical edges of said extended portions being tapered to substantially conform to the contour of the shank of the key, the lower end of the extended portions being slightly yieldable and arranged to be sprung over the rim when being positioned thereon, an indentation formed in the tapered bottom of the extended portions, each indentation being provided with a rounded interior wall disposed to frictionally engage the lower edge of the rim, and a resilient cushion fixed in and projecting from the top of the member.

3. A cushion cap for the keys of calculating or similar machines in which the keys are arranged in vertical alinement and stepped relation, each key being formed with a relatively narrow rim and a reduced shank portion depending therefrom, said cap comprising a thin sheet metal tubular member having integrally formed therein upper and lower shallow cupshaped portions, the walls of the lower cup portlon being arranged to cover the rim of the key and terminate at the lower edge thereof and having at least one'relatively wide portion extending perpendicularly below the rim to obsoure a part of the shank, the vertical edges of said extended portion being tapered to substantially conform to the contour of the shank of the key, the lower end of the extended portion being slightly yieldable and arranged to be sprung over the rim when being positioned thereon, an indentation formed in the tapered bottom of the extended portion and provided with a rounded interior wall disposed to frictionally engage the lower edge of the rim, and a resilient cushion fixed in and projecting from the top of the upper cup-shaped portion of the member.

GARRY W. MUNSON.

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